Vpnbook can be an option too (but is a bit slow).
Free VPN • 100% Free PPTP and OpenVPN Service
And about free SR i tested saying something different (trick or treat), thinking if i say PeroPero maybe they guess that i'm a bot.
P.S: If you learn to use tor, Facebook has an onion link.
https://facebookcorewwwi.onion/
P.S: Facebook is known as a big NSA collector, i understand why chinese want to lock it.